Pocket Watch Database
Patent Archive
#2188688
Patent Information
Watch Crown Seal
George Edward Mack
January 30, 1940
Patent #2188688
| Patent Number: | 2188688 |
| Description: | Watch Crown Seal |
| Inventor(s): | George Edward Mack |
| Patent Date: | Jan 30, 1940 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
